Saw-swage.



F. BRUNETT.

SAW SWAGE.

APPLICATION FILED AUG. 2?, 190,7.

- THE "cums PETERS cm, WASHINGTON. u. c.

Patented Nov. 3, 1908.

I I W auumaboz j w/(M UNIE FRANK BRUNETT, OF EVARO, MONTANA.

SAW-SWAGE Original application filed May 7, 1907, Serial No. 372,295.

Specification of Letters Patent.

Patented Nov. 3, 1908.

Divided and this application filed. August 27, 1907.

Serial No. 390,394.

To all whom it may concern:

Be it known that I, FRANK BRUNETT, a citizen of the United States, residing at Evaro, in the county of Missoula and State of Montana, have invented certain new and useful Improvements in Saw-Swages, of which the following is a specification, reference being had to the accompanying drawmgs.

My invention relates to improvements in devices for swaging the teeth of saws, particularly cross-cut saws, and it consists in the novel features of construction and the combination and arrangement of parts hereinafter described and claimed.

The object of the invention is to provide a device of this character which will be simple and inexpensive in construction and effective in operation.

The above and other objects are attained in the preferred embodiment of the invention illustrated in the accompanying drawings in which Figure 1 is an end elevation of my improved saw swaging device; Fig. 2 is a vertical longitudinal section of the same; Fig. 3 is a vertical transverse section taken on the plane indicated by the line 3-3 in Fig. 2; and Fig. 4 is a perspective view of the swaging cam and its operating lever.

In the drawing 1 denotes the body of the swage, which is preferably in the form of a casting and of inverted U-shape so as to provide a slot or opening in its bottom for the reception of the toothed edge of the saw. The front portion of member 2 of the body is somewhat longer than its rear portion or member 3 and is adapted to serve as a stationary clamp jaw with which co-acts a movable clamp jaw 4 carried by the rear member 3. The jaw 4 is in the form of a plate mounted to slide toward and from the jaw 2 and adapted to be retracted by a coil spring 5 which surrounds a guide pin 6 projecting rearwardly from the aw plate 4 and through an opening in the member 3 of the body. This pin 6 guides the jaw 4 in its sliding movement and upon its outer end is a head which retains the spring upon it. The jaw 4 is projected inwardly to clamp the saw against the jaw 2 by a screw 7 arranged in a threaded opening in the member 3 and having an operating lever 8 upon its outer end. Upon the jaw or member 2 of the body are arranged oppositely projecting guide or gage plates 9, 10 which are adapted to engage the points of the saw teeth and thus support and guide the device. These plates 9, 10 may be of any suitable form and construction and are preferably adjustably mounted.

The numeral 17 denotes a swage cam or eccentric arranged intermediate two concentric cylindrical journal members 18, 19 of a shaft extending through the two members of the body. The larger journal 19 is arranged in a bearing opening in the member 2 and the smaller ournal 18 is arranged in a similar opening in the member 3, while the in termediate cam or eccentric 17 is disposed in the slot or opening in the body as clearly shown in Fig. 3. The cam or eccentric shaft is retained in the body by a set screw 20 which is passed through a washer 21, engaged with the outer face of the member 3 of the body, and into a threaded socket in the journal 18. Said shaft is operated by a hand lever 22 which is removably and adjustably secured upon the front or enlarged journal 19 by forming the outer end of the same with an annular series of radial serrations or ribs 23 adapted to be engaged by a similar series of serrations or ribs upon one end of said lever. These serrations or ribs are held in engagement with each other and consequently the lever is held in an adjusted position, by a screw 24 passed through the lever and into a threaded socket concentrically disposed in the journal 19. By reav son of this connection between the lever and the shaft, it will be seen that when the lever is swung to any predetermined positionor against a suitable stop; the cam or eccentric 17 will be moved a predetermined extent or to a position that will properly swage the saw tooth beneath it. The cam or eccentric when operated forces the saw tooth against a combined stop and anvil in the form of a removable pin 25 which is passed transversely through the members 2, 3 of the body a little beneath the cam or eccentric as shown in Fig. 2. This pin as seen in said figure is engaged by one of the prongs of the tooth of the cross-cut saw and receives the thrust of the cam when said prong of the tooth is swaged. When it is desired to swage the other prong of the tooth the device is lifted from the saw and turned around so that the pin 25 engages the other prong, as will be readily understood. Upon the outer end of the pin is a suitable finger piece by means of Which it may be readily removed from or inserted in the alined apertures in the tWo members of the body.

In using the device the body is placed over the edge of the saw as shown in Fig. 2 and after the prong of the tooth to be sWa-ged is properly positioned beneath the cam and against the stop or anvil pin 25, the body is clamped upon the saw by turning the lever 8 to cause the screw 7 to actuate the movable jaw 4: of the clamp. The lever 22 is then turned through a predetermined arc to cause the cam or eccentric 17 to svvage the tooth to the desired extent. This extent may be varied by adjusting the position of the lever upon the cam or eccentric shaft as above mentioned. After one prong of the tooth is sWaged the device is reversed and the other prong is similarly sWaged.

Having thus described my invention What I claim is: i V

In a device of the character described, the

combination of a body to take over the edge of a saw and having in its depending members concentrically disposed bearing openings of different diameters, a transverse shaft having a central cam portion and cylindrical end portions or journals, the latter being of different diameters to rotate in the bearing openings in the members of the body, said cam portion being of less diameter than the larger journal or end portion of the shaft whereby the shaft may be positioned in the body by inserting it in the large bearing opening therein, means for retaining the shaft in the body, a handle upon one end of the shaft, an anvil in the body to co-act with said cam portion of the shaft, and means for clamping the body to a saw. In testimony whereof I hereunto aiiix my signature in the presence of two Witnesses.

FRANK BRUNETT.

Witnesses J. M. PRICE, J OHN W. HIOKLIN. 

